Anonymous posted an answer for this 1995 Suzuki Sidekick:
"Sounds like you have a bad fuel gauge sending unit."
Anonymous posted an answer for this 1989 Chevrolet C1500:
"Firing order is 1-6-5-4-3-2 cyls. # 1-3-5 on drivers side front to back and cyls. # 2-4-6..."